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HSChapter 84
U.S. imports of check valves (HS 848130) totaled $50.7M in April 2026, traded with 56 countries.
Importers of Check Valves paid $7.9M in duties in April 2026 — an effective duty rate of 18% on $43.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataCheck valves — one-way flow devices that prevent backflow in piping systems — are classified in the US schedule primarily by body material: copper at two pressure-rating thresholds (8481301010 and 8481301090), iron (8481302010), steel (8481302090), and all other materials (8481309000). This material-based structure means that a functionally identical valve can fall into different tariff lines depending solely on its body composition, making metallurgical documentation a routine compliance requirement. China is the leading US import source for this heading, followed by Mexico and Canada. Importers sourcing from China should assess Section 301 tariff exposure at the applicable 10-digit line level.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US schedule splits copper check valves at a rated working pressure of 850 kPa: valves rated below that threshold fall under 8481301010, while those rated at or above 850 kPa fall under 8481301090. The pressure rating on the manufacturer's specification sheet or stamped on the valve body is the controlling evidence, and importers should retain that documentation in their entry records.
Classification is based on the material of the valve body (the principal structural component), not the internal trim or seats. A valve with a steel body and copper internals would be classified under the steel check valve line (8481302090). When body material is ambiguous from the invoice description alone, a material certification or mill test report from the manufacturer should be obtained to support the classification.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8481302090 | CHECK VALVES OF STEEL | $21.0M | 18.72% | $3.6M |
| 8481309000 | CHECK VALVES EXCEPT COPPER, IRON OR STEEL | $15.6M | 14.70% | $1.8M |
| 8481301090 | CHECK VALVES,COPPER, W PRESSURE RATE 850 KPA OR OV | $8.7M | 20.21% | $1.7M |
| 8481302010 | CHECK VALVES OF IRON | $4.5M | 24.79% | $735K |
| 8481301010 | CHECK VALVES,COPPER, W PRESSURE RATING UN 850 KPA | $972K | 19.04% | $159K |
CHECK VALVES OF STEEL
CHECK VALVES EXCEPT COPPER, IRON OR STEEL
CHECK VALVES,COPPER, W PRESSURE RATE 850 KPA OR OV
CHECK VALVES OF IRON
CHECK VALVES,COPPER, W PRESSURE RATING UN 850 KPA
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8481309000 | CHECK VALVES EXCEPT COPPER, IRON OR STEEL | $30.0M |
| 8481302090 | CHECK VALVES OF STEEL | $16.5M |
| 8481302010 | CHECK VALVES OF IRON | $2.1M |
| 8481301010 | CHECK VALVES,COPPER, W PRESSURE RATING UN 850 KPA | $1.5M |
| 8481301090 | CHECK VALVES,COPPER, W PRESSURE RATE 850 KPA OR OV | $1.4M |
CHECK VALVES EXCEPT COPPER, IRON OR STEEL
2.0M no
CHECK VALVES OF STEEL
118.1K no
CHECK VALVES OF IRON
7.1K no
CHECK VALVES,COPPER, W PRESSURE RATING UN 850 KPA
45.6K no
CHECK VALVES,COPPER, W PRESSURE RATE 850 KPA OR OV
33.4K no
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $12.8M | $7.3M | -$5.5M |
| California | $5.0M | $6.0M | +$949K |
| Ohio | $3.0M | $4.6M | +$1.6M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $5.8M | $928K | -$4.9M |
| NEW ORLEANS, LA | $1.7M | $4.9M | +$3.2M |
| LOS ANGELES, CA | $6.3M | -- | -$6.3M |